ReplicaSets

A ReplicaSet is a component in Kubernetes, a platform for managing applications in containers. Its main purpose is to ensure that a specified number of identical copies of an application are always running. If one copy fails, the ReplicaSet automatically launches a new one to replace it. This helps maintain high availability and reliability of applications, allowing them to handle increased traffic or recover from failures without manual intervention. Essentially, a ReplicaSet acts like a safety net, ensuring your application remains stable by keeping the right number of active instances.